/* ===================================================
   NEXUS — Animations & Transitions
   =================================================== */

/* ─── Keyframes ─────────────────────────────────────── */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.97); }
}

@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 0 rgba(108, 99, 255, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(108, 99, 255, 0); }
}

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes msgSlide {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

@keyframes xpFloat {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  20% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
  50% { opacity: 1; transform: translate(-50%, -60%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -80%) scale(0.8); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(108, 99, 255, 0.3); }
  50% { box-shadow: 0 0 40px rgba(108, 99, 255, 0.6); }
}

@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.05); opacity: 1; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes streakFlame {
  0%, 100% { transform: scaleY(1) rotate(-2deg); }
  50% { transform: scaleY(1.1) rotate(2deg); }
}

@keyframes badgeUnlock {
  0% { opacity: 0; transform: scale(0) rotate(-180deg); }
  60% { transform: scale(1.2) rotate(10deg); }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}

@keyframes progressGrow {
  from { width: 0; }
}

@keyframes chartBar {
  from { transform: scaleY(0); transform-origin: bottom; }
  to { transform: scaleY(1); transform-origin: bottom; }
}

@keyframes floatUp {
  0% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

@keyframes ripple {
  from { transform: scale(0); opacity: 0.6; }
  to { transform: scale(4); opacity: 0; }
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14% { transform: scale(1.15); }
  28% { transform: scale(1); }
  42% { transform: scale(1.1); }
  56% { transform: scale(1); }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ─── Animation Utility Classes ─────────────────────── */
.animate-fade-in { animation: fadeIn 0.4s var(--ease) forwards; }
.animate-fade-in-up { animation: fadeInUp 0.5s var(--ease) forwards; }
.animate-fade-in-down { animation: fadeInDown 0.4s var(--ease) forwards; }
.animate-scale-in { animation: scaleIn 0.3s var(--ease-spring) forwards; }
.animate-slide-down { animation: slideDown 0.3s var(--ease) forwards; }

/* Stagger animations for lists */
.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 60ms; }
.stagger > *:nth-child(3) { animation-delay: 120ms; }
.stagger > *:nth-child(4) { animation-delay: 180ms; }
.stagger > *:nth-child(5) { animation-delay: 240ms; }
.stagger > *:nth-child(6) { animation-delay: 300ms; }
.stagger > *:nth-child(7) { animation-delay: 360ms; }
.stagger > *:nth-child(8) { animation-delay: 420ms; }

/* ─── Shimmer / Skeleton Loading ────────────────────── */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.04) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.04) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}
.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-text-sm { height: 10px; }
.skeleton-circle { border-radius: 50%; }

/* ─── Hover Lift Effect ─────────────────────────────── */
.hover-lift {
  transition: transform var(--transition), box-shadow var(--transition);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ─── Glow Effects ──────────────────────────────────── */
.glow-purple { animation: glowPulse 3s ease-in-out infinite; }
.glow-teal { animation: glowPulse 3s ease-in-out infinite; box-shadow: 0 0 20px rgba(0, 212, 255, 0.3); }

/* ─── Breathing Animation (for grounding exercises) ── */
.breathing-circle {
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.3), rgba(0, 212, 255, 0.1));
  border: 2px solid rgba(108, 99, 255, 0.4);
}
.breathing-circle.inhale { animation: breathe 4s ease-in-out; }
.breathing-circle.exhale { animation: breathe 6s ease-in-out reverse; }

/* ─── Page Transition ───────────────────────────────── */
.page-enter {
  animation: fadeInUp 0.4s var(--ease) forwards;
}
.page-exit {
  animation: fadeIn 0.2s var(--ease) reverse forwards;
}

/* ─── Floating Elements ─────────────────────────────── */
.float-1 { animation: floatUp 3s ease-in-out infinite; }
.float-2 { animation: floatUp 3s ease-in-out infinite 1s; }
.float-3 { animation: floatUp 3s ease-in-out infinite 2s; }

/* ─── Text Cursor (typing effect) ───────────────────── */
.typing-cursor::after {
  content: '|';
  animation: pulse 0.8s step-end infinite;
  color: var(--purple-light);
}

/* ─── Gradient Animated Background ──────────────────── */
.gradient-bg-animated {
  background: linear-gradient(270deg, #0a0b1e, #1a0a3e, #0a1e3e, #0a2018);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

/* ─── Card Entrance ─────────────────────────────────── */
.card-enter {
  opacity: 0;
  animation: fadeInUp 0.5s var(--ease) forwards;
}

/* ─── Button Ripple ─────────────────────────────────── */
.btn-primary, .btn-secondary {
  position: relative;
  overflow: hidden;
}
.btn-primary::after, .btn-secondary::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: scale(0);
  top: var(--y, 50%);
  left: var(--x, 50%);
  translate: -50% -50%;
  pointer-events: none;
}
.btn-primary.rippling::after, .btn-secondary.rippling::after {
  animation: ripple 0.5s ease-out;
}

/* ─── Progress animation ────────────────────────────── */
.progress-fill {
  animation: progressGrow 1s var(--ease) forwards;
}

/* ─── Number counter animation ──────────────────────── */
.count-animate {
  animation: countUp 0.5s var(--ease) forwards;
}

/* ─── Streak flame ──────────────────────────────────── */
.streak-flame {
  display: inline-block;
  animation: streakFlame 1.5s ease-in-out infinite;
}

/* ─── Badge unlock ──────────────────────────────────── */
.badge-unlock {
  animation: badgeUnlock 0.8s var(--ease-spring) forwards;
}

/* ─── Heartbeat (for crisis/wellness) ───────────────── */
.heartbeat { animation: heartbeat 1.5s ease-in-out infinite; }

/* ─── Reduce Motion Preference ──────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}